Lubricant for compression refrigerating machine and refrigerating apparatus using the same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMasato Kaneko, Harutomo Ikeda
Life of this patent
Estimating the term…
Abstract
The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000; and an organic carboxylic acid ester of a polyhydric alcohol in which the ester contains two or more free hydroxyl groups. The lubricating oil for a compression type refrigerator of the present invention has high miscibility and high viscosity index, and is excellent in wear resistance and also corrosion prevention property under carbon dioxide atmosphere.
Claims21
A lubricating oil for a compression type refrigerator, comprising:
- a polyvinyl ether-based compound containing alkylene glycol or polyoxyalkylene glycol units and vinyl ether units in a molecule and having a molecular weight in a range of 300 to 3,000;
- and
- an organic carboxylic acid ester of a polyhydric alcohol in which the ester contains two or more free hydroxyl groups.
A lubricating oil for a compression type refrigerator, comprising:
- a polyvinyl ether-based compound having a molecular weight in the range of 300 to 3,000, obtained by polymerizing vinyl ether-based compounds in the presence of a polymerization initiator and
- an organic carboxylic acid ester of a polyhydric alcohol in which the ester contains two or more free hydroxyl groups,
- wherein at least one of the polymerization initiator and the vinyl ether-based compound comprises an alkylene glycol residue or a polyoxyalkylene glycol residue.
Dependencies are inferred from the claim text.